Table 6.

Most frequently detected algorithms and AI service in social robotics, referring documents, and peculiar features.

Service	Peculiar Features
Amazon Polly Speech Synthesis [146]	Text to speech algorithm
Google Text-To-Speech [147]	Text to speech algorithm
Google Speech-To-Text [147]	Speech to text algorithm
PocketSphynx [19,148]	Speech recognition algorithm
IBM Tone Analyzer [147]	Emotions from text algorithm
YOLO V3 [25,26,134,149,150]	Object detection algorithm
Yolact ++ [151]	Object detection algorithm
SLAM [26,32,47,51,106,118,152,153,154]	Mapping and navigation algorithm
Baudi [146]	Face recognition algorithm
Procrob Functional [19]	Face recognition algorithm
Euclid [146]	Face recognition algorithm
Viola-Jones algorithm [155,156]	Face recognition algorithm
Google Dialogflow [19]	Speech and text machine learning service
IBM Watson Assistant [147,157]	Question answering computing system
Amazon Lex [19,146]	Deep learning service for natural speech recognition